Author
Topic: 120-400 OS Sigma &7D (Read 2385 times)

Before I knew better I bought the 120-400 OS following advice from one of the magazines,this lens has never worked properly giving milky pics with ghostlike halos around subjects,an allover softness which I liken to a Doris Day filter,funnily enough it turns out quite sharp and clear portraits on my friend's 5DmkIII.Has anyone come across a fix to get this lens to work on the 7D,have tried the AF adjust to get the focus to work,still has milky images.It turns out slightly more acceptable images on my 450D but still with a Doris Day filter

The Sigma 120-400 is never going to be a match for good L glass such as the most obvious equivalent, the Canon 100-400L. But the Sigma is half the price. Even so, what you describe absolutely shouldn't be happening. If you bought it new I'd be looking at a refund or a fresh copy if you're still inside the 14 day DOA period.

The Sigma 120-400 is never going to be a match for good L glass such as the most obvious equivalent, the Canon 100-400L. But the Sigma is half the price. Even so, what you describe absolutely shouldn't be happening. If you bought it new I'd be looking at a refund or a fresh copy if you're still inside the 14 day DOA period.

-PW

way outside return period,grey import[AUS],all other lenses,bar Sigma 150 F2.8 macro: 100 f2.8L IS,70-300 L IS,70-200 f4 L and Tokina 11-16 are sharp and crisp,the Siggy 150 is fine in manual and sometimes AF,doesn't display same degree of Doris,shall post so as to give you fine folks an idea of prob